Investigation on Scrambler Reconstruction With
Minimum A Priori Knowledge

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Title

Investigation on Scrambler Reconstruction With
Minimum A Priori Knowledge

Author

Liu, Xiao-Bei; Koh, Soo Ngee; Wu, Xin-Wen; Chui, Chee-Cheon

Publication Title

Proceedings of IEEE Global Communications Conference (GLOBECOM) 2011

Editor

IEEE

Year Published

2011

Place of publication

United States

Publisher

IEEE

Abstract

The existing algorithm for reconstruction of the
feedback polynomial in a linear scrambler relies on the assumption
that the input sequence is produced by a biased memoryless
source and the source bias is known and used for reconstruction.
In this paper, the problem of reconstruction of the feedback
polynomial in a linear scrambler without knowledge of the source
bias is studied. An algorithm is proposed to reconstruct the
scrambler without knowledge of the source bias and factors which
affect the performance of this algorithm are discussed. A scheme
which reduces the number of bits used in the reconstruction
without affecting the detection capability of the reconstruction
algorithm is also proposed in this paper.